Permanent magnet synchronous motor rotor coupling

Abstract

The utility model relates to the field of mechanical transmission, in particular to a permanent magnet synchronous motor rotor coupling, which comprises a first half coupling, a second half coupling and an elastic sheet, one side of the first half coupling is fixedly connected with a first flange, and one side of the second half coupling is fixedly connected with a second flange. Compared with the prior art, the rotor coupling has the advantages that through the cooperation of the first half coupling, the second half coupling, the elastic sheet, the first flange, the second flange, the groove, the moving plate, the limiting plate, the connecting plate, the bolts, the limiting rod structure and the limiting sliding hole, when the rotor coupling is installed, a plurality of bolts can be driven to be inserted at a time for subsequent installation; and through cooperation between the guide cylinder and the magnetic sheet, the maximum moving distance of the moving plate can be limited when the rotor coupling is disassembled, so that the rotor coupling can be disassembled more easily, simply and conveniently.

Description

Technical Field

[0001] The utility model relates to the field of mechanical transmission, in particular to a permanent magnet synchronous motor rotor coupling. Background Art

[0002] The rotor coupling is a key component for connecting each rotor of a steam turbine and the rotor of a generator. Its application range is relatively wide. The permanent magnet synchronous motor uses permanent magnets to provide excitation. When starting, the motor needs to overcome the moment of inertia of the rotor, so that the starting power of the motor is much greater than the power when the equipment is working normally. The current flowing through the permanent magnet is much larger than the rated current. In the case of sudden stop of the equipment, the voltage across the permanent magnet suddenly increases, and the permanent magnet will be demagnetized under the action of the overload current, resulting in a decline in the performance of the motor. Generally, the permanent magnet synchronous motor drives the load to rotate through the rotor coupling. When the existing rotor coupling is connected, it is generally connected by passing bolts through multiple mounting holes. When installing, the bolts need to be inserted one by one, resulting in troublesome installation operations. Summary of the Utility Model

[0003] The purpose of the utility model aims to solve at least one of the technical defects.

[0004] Therefore, an object of the utility model is to provide a permanent magnet synchronous motor rotor coupling to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0005] To achieve the above object, an embodiment of one aspect of the utility model provides a permanent magnet synchronous motor rotor coupling, including a first half coupling, a second half coupling and an elastic sheet. One side of the first half coupling is fixedly connected with a first flange, one side of the second half coupling is fixedly connected with a second flange. A groove is provided on one side of the second flange. A moving plate is arranged on one side of the second flange. Two first limit plates are fixedly connected to one side of the moving plate. A connecting plate is fixedly installed on one side of the first limit plate. A bolt is arranged between the two first limit plates. A limit rod structure is fixedly connected to one side of the moving plate. Limiting sliding holes are provided on the surfaces of the first half coupling, the second half coupling and the elastic sheet. The technical effect achieved by adopting the above solution is that: by performing corresponding connection operations on the rotor of the permanent magnet synchronous motor, then placing the elastic sheet and the first half coupling on one side of the second half coupling, and then pushing the moving plate to move, so that the bolt on one side of the moving plate passes through the corresponding holes of the elastic sheet, the first half coupling and the second half coupling, and then fixing the bolt, making the installation operation of the coupling simpler and more convenient.

[0006] Preferably, any of the above schemes is that a fixing screw is provided on one side of the connecting plate, and a threaded hole matching the fixing screw is provided on one side of the first limiting plate. The technical effect achieved by adopting the above scheme is that the connecting plate can be easily disassembled by the fixing screw, so that the bolt can be replaced, and the operation is simple and convenient.

[0007] Preferably, any of the above schemes is that the limit rod structure includes a connecting rod, which is fixedly mounted on one side of the movable plate, and one end of the connecting rod is fixedly connected to a second limit plate, and the diameter of the second limit plate is the same as the diameter of the limit slide hole. The technical effect achieved by adopting the above scheme is that when the movable plate is pushed to move, the second limit plate slides inside the limit slide hole, thereby guiding the insertion of the bolts, and multiple bolts can be inserted into the corresponding mounting holes at one time.

[0008] Preferably, any of the above schemes is that the thickness of the groove is the same as the thickness of the movable plate, the size of the groove is the same as the size of the movable plate, the inner wall of the groove is fixedly connected with a guide cylinder, one side of the guide cylinder is provided with a through hole compatible with the connecting rod, the inner wall of the guide cylinder is provided with a through groove compatible with the second limit plate, the guide cylinder and the limit sliding hole are coaxially distributed, and the technical effect achieved by adopting the above scheme is: the guide cylinder can extend the moving distance of the limit rod structure, thereby facilitating the bolt to detach from the first half coupling and the inside of the elastic sheet.

[0009] Preferably, any of the above schemes is that a receiving groove matched with the guide cylinder is provided on one side of the movable plate, and the height of the receiving groove is smaller than the height of the movable plate. The technical effect achieved by adopting the above scheme is that the guide cylinder can be conveniently inserted into the interior of the receiving groove through the receiving groove for storage, so that one side of the movable plate can fit the inner wall of the groove when the installation is completed.

[0010] Preferably, any of the above schemes has magnetic sheets fixedly installed on one side of the second limit plate and the inner wall of the guide cylinder. The technical effect achieved by adopting the above scheme is that the position of the second limit plate can be adsorbed and fixed by the magnetic sheet, thereby preventing the bolt from moving significantly during subsequent disassembly operations, making disassembly easier and more convenient.

[0011] Preferably, any of the above schemes has a length of the limit rod structure greater than the length of the bolt. The technical effect achieved by adopting the above scheme is that the length of the limit rod structure is greater than the length of the bolt, thereby ensuring that the bolt is detached from the first half coupling and the elastic sheet.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] 1. The rotor coupling of a permanent magnet synchronous motor can drive multiple bolts to be inserted at one time for subsequent installation during the installation operation of the rotor coupling through the cooperation between the first half coupling, the second half coupling, the elastic sheet, the first flange, the second flange, the groove, the moving plate, the first limiting plate, the connecting plate, the bolt, the limiting rod structure and the limiting sliding hole, so that the installation can be made more easily and simply.

[0014] 2. The rotor coupling of a permanent magnet synchronous motor can limit the maximum distance of the movement of the moving plate during the disassembly operation of the rotor coupling through the cooperation between the guiding cylinder and the magnetic sheet, so that the disassembly can be made more easily and simply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the first perspective of Embodiment 1 of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the second perspective of Embodiment 1 of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the third perspective of Embodiment 1 of the present utility model;

[0018] Figure 4 is Embodiment 1 of the present utility model Figure 3 schematic diagram of the structure at A;

[0019] Figure 5 is a schematic structural diagram of the fourth perspective of Embodiment 1 of the present utility model;

[0020] Figure 6 is Embodiment 1 of the present utility model Figure 5 schematic diagram of the structure at B.

[0021] Wherein: 1 - first half coupling, 2 - second half coupling, 3 - elastic sheet, 4 - first flange, 5 - second flange, 6 - groove, 7 - moving plate, 8 - first limiting plate, 9 - connecting plate, 10 - bolt, 11 - limiting rod structure, 1101 - connecting rod, 1102 - second limiting plate, 12 - limiting sliding hole, 13 - fixing screw, 14 - guiding cylinder, 15 - magnetic sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model with reference to the drawings, but the protection scope of the present utility model is not limited to the following.

[0023] Embodiment 1: As Figures 1 to 6As shown in the figure, a permanent magnet synchronous motor rotor coupling includes a first half coupling 1, a second half coupling 2 and an elastic sheet 3. One side of the first half coupling 1 is fixedly connected with a first flange 4, and one side of the second half coupling 2 is fixedly connected with a second flange 5. A groove 6 is opened on one side of the second flange 5, and a moving plate 7 is arranged on one side of the second flange 5. Two first limiting plates 8 are fixedly connected to one side of the moving plate 7, and a connecting plate 9 is fixedly installed on one side of the first limiting plate 8. A bolt 10 is arranged between the two first limiting plates 8. A limiting rod structure 11 is fixedly connected to one side of the moving plate 7. Limiting sliding holes 12 are opened on the surfaces of the first half coupling 1, the second half coupling 2 and the elastic sheet 3. By performing corresponding connection operations on the rotor of the permanent magnet synchronous motor, then the elastic sheet 3 and the first half coupling 1 are placed on one side of the second half coupling 2, and then the moving plate 7 is pushed to move, so that the bolt 10 on one side of the moving plate 7 passes through the corresponding holes of the elastic sheet 3, the first half coupling 1 and the second half coupling 2, and then the bolt 10 is fixed, making the installation operation of the coupling simpler and more convenient.

[0024] As an alternative technical solution of the present invention, a fixing screw 13 is arranged on one side of the connecting plate 9, and a threaded hole adapted to the fixing screw 13 is arranged on one side of the first limiting plate 8. The connecting plate 9 can be conveniently disassembled through the fixing screw 13, so that the bolt 10 can be replaced, and the operation is simple and convenient.

[0025] As an alternative technical solution of the present invention, the limiting rod structure 11 includes a connecting rod 1101. The connecting rod 1101 is fixedly installed on one side of the moving plate 7. One end of the connecting rod 1101 is fixedly connected with a second limiting plate 1102. The diameter of the second limiting plate 1102 is the same as the diameter of the limiting sliding hole 12. When the moving plate 7 is pushed to move, the second limiting plate 1102 slides inside the limiting sliding hole 12, so as to guide the insertion of the bolt 10 and enable multiple bolts 10 to be inserted into the corresponding installation holes at one time.

[0026] As an alternative technical solution of the present invention, the thickness of the groove 6 is the same as the thickness of the moving plate 7, the size of the groove 6 is the same as the size of the moving plate 7, a guiding cylinder 14 is fixedly connected to the inner wall of the groove 6, a through hole adapted to the connecting rod 1101 is opened on one side of the guiding cylinder 14, a through groove adapted to the second limiting plate 1102 is opened on the inner wall of the guiding cylinder 14, and the guiding cylinder 14 and the limiting sliding hole 12 are coaxially distributed. The guiding cylinder 14 can extend the moving distance of the limiting rod structure 11, so as to facilitate the separation of the bolt 10 from the inside of the first half coupling 1 and the elastic sheet 3.

[0027] As an alternative technical solution of the present utility model, a storage groove adapted to the guiding cylinder 14 is formed on one side of the moving plate 7. The height of the storage groove is less than the height of the moving plate 7. The guiding cylinder 14 can be conveniently inserted into the interior of the storage groove through the storage groove for storage, so that one side of the moving plate 7 can be attached to the inner wall of the groove 6 when the installation is completed.

[0028] As an alternative technical solution of the present utility model, magnetic sheets 15 are fixedly installed on one side of the second limiting plate 1102 and the inner wall of the guiding cylinder 14. The position of the second limiting plate 1102 can be adsorbed and fixed through the magnetic sheets 15, so that the bolt 10 can be prevented from moving greatly during subsequent disassembly operations, making the disassembly easier and more convenient.

[0029] As an alternative technical solution of the present utility model, the length of the limiting rod structure 11 is greater than the length of the bolt 10. By the length of the limiting rod structure 11 being greater than the length of the bolt 10, it can be ensured that the bolt 10 disengages from the interior of the first half coupling 1 and the elastic sheet 3.

[0030] A permanent magnet synchronous motor rotor coupling has the following working principle: By performing corresponding connection operations on the rotor of the permanent magnet synchronous motor, then the elastic sheet 3 and the first half coupling 1 are placed on one side of the second half coupling 2, and then the moving plate 7 is pushed to move, so that the bolt 10 on one side of the moving plate 7 passes through the corresponding holes of the elastic sheet 3, the first half coupling 1, and the second half coupling 2, and then the bolt 10 is fixed, making the coupling installation operation simpler and more convenient.

[0031] In summary, for this permanent magnet synchronous motor rotor coupling, through the cooperation among the first half coupling 1, the second half coupling 2, the elastic sheet 3, the first flange 4, the second flange 5, the groove 6, the moving plate 7, the first limiting plate 8, the connecting plate 9, the bolt 10, the limiting rod structure 11, and the limiting sliding hole 12, when installing the rotor coupling, multiple bolts 10 can be driven to be inserted at one time for subsequent installation, making the installation easier and more convenient. Through the cooperation between the guiding cylinder 14 and the magnetic sheet 15, when disassembling the rotor coupling, the maximum distance of the movement of the moving plate 7 can be limited, making the disassembly easier and more convenient.

[0032] Embodiment 2: A permanent magnet synchronous motor rotor coupling. In this embodiment, on the basis of the above embodiment, balls are provided on the surface of the second limiting plate 1102. The balls can reduce friction when the moving plate 7 is pushed to move, making the operation easier.

Claims

1. A permanent magnet synchronous motor rotor coupling, comprising a first half coupling (1), a second half coupling (2) and an elastic sheet (3), characterized in that: One side of the first half coupling (1) is fixedly connected to a first flange (4), one side of the second half coupling (2) is fixedly connected to a second flange (5), one side of the second flange (5) is provided with a groove (6), one side of the second flange (5) is provided with a movable plate (7), one side of the movable plate (7) is fixedly connected to two first limit plates (8), one side of the first limit plate (8) is fixedly installed with a connecting plate (9), a bolt (10) is provided between the two first limit plates (8), one side of the movable plate (7) is fixedly connected to a limit rod structure (11), and the surfaces of the first half coupling (1), the second half coupling (2) and the elastic sheet (3) are provided with limit sliding holes (12).

2. A permanent magnet synchronous motor rotor coupling according to claim 1, characterized in that: A fixing screw (13) is provided on one side of the connecting plate (9), and a threaded hole matching the fixing screw (13) is provided on one side of the first limiting plate (8).

3. A permanent magnet synchronous motor rotor coupling according to claim 2, characterized in that: The limiting rod structure (11) comprises a connecting rod (1101), wherein the connecting rod (1101) is fixedly mounted on one side of the movable plate (7), and one end of the connecting rod (1101) is fixedly connected to a second limiting plate (1102), wherein the diameter of the second limiting plate (1102) is the same as the diameter of the limiting sliding hole (12).

4. A permanent magnet synchronous motor rotor coupling according to claim 3, characterized in that: The thickness of the groove (6) is the same as that of the movable plate (7); the size of the groove (6) is the same as that of the movable plate (7); a guide cylinder (14) is fixedly connected to the inner wall of the groove (6); a through hole matched with the connecting rod (1101) is provided on one side of the guide cylinder (14); a through groove matched with the second limiting plate (1102) is provided on the inner wall of the guide cylinder (14); and the guide cylinder (14) and the limiting sliding hole (12) are coaxially distributed.

5. A permanent magnet synchronous motor rotor coupling according to claim 4, characterized in that: A receiving groove matched with the guide cylinder (14) is provided on one side of the movable plate (7), and the height of the receiving groove is smaller than the height of the movable plate (7).

6. A permanent magnet synchronous motor rotor coupling according to claim 5, characterized in that: A magnetic sheet (15) is fixedly mounted on one side of the second limiting plate (1102) and the inner wall of the guide cylinder (14).

7. A permanent magnet synchronous motor rotor coupling according to claim 6, characterized in that: The length of the limiting rod structure (11) is greater than the length of the bolt (10).

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